./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0019-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0019-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0c6505355e23ab050a0b1754726876dca60bcf4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0019-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0c6505355e23ab050a0b1754726876dca60bcf4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:03:39,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:03:39,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:03:39,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:03:39,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:03:39,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:03:39,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:03:39,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:03:39,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:03:39,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:03:39,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:03:39,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:03:39,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:03:39,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:03:39,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:03:39,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:03:39,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:03:39,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:03:39,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:03:39,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:03:39,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:03:39,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:03:39,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:03:39,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:03:39,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:03:39,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:03:39,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:03:39,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:03:39,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:03:39,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:03:39,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:03:39,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:03:39,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:03:39,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:03:39,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:03:39,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:03:39,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:03:39,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:03:39,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:03:39,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:03:39,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:03:39,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:03:39,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:03:39,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:03:39,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:03:39,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:03:39,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:03:39,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:03:39,481 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:03:39,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:03:39,481 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:03:39,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:03:39,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:03:39,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:03:39,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:03:39,483 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:03:39,483 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:03:39,483 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:03:39,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:03:39,488 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:03:39,489 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:03:39,489 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:03:39,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:03:39,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:03:39,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:03:39,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:03:39,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:03:39,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:03:39,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:03:39,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:03:39,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:03:39,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0c6505355e23ab050a0b1754726876dca60bcf4 [2021-08-30 17:03:39,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:03:39,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:03:39,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:03:39,831 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:03:39,832 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:03:39,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0019-2.i [2021-08-30 17:03:39,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e58d3babc/bf62d488fd724e77962d8564a616c424/FLAGaff3b0348 [2021-08-30 17:03:40,379 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:03:40,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0019-2.i [2021-08-30 17:03:40,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e58d3babc/bf62d488fd724e77962d8564a616c424/FLAGaff3b0348 [2021-08-30 17:03:40,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e58d3babc/bf62d488fd724e77962d8564a616c424 [2021-08-30 17:03:40,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:03:40,731 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:03:40,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:03:40,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:03:40,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:03:40,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:03:40" (1/1) ... [2021-08-30 17:03:40,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f90ed84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:40, skipping insertion in model container [2021-08-30 17:03:40,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:03:40" (1/1) ... [2021-08-30 17:03:40,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:03:40,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:03:41,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:03:41,041 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:03:41,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:03:41,095 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:03:41,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:41 WrapperNode [2021-08-30 17:03:41,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:03:41,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:03:41,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:03:41,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:03:41,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:41" (1/1) ... [2021-08-30 17:03:41,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:41" (1/1) ... [2021-08-30 17:03:41,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:41" (1/1) ... [2021-08-30 17:03:41,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:41" (1/1) ... [2021-08-30 17:03:41,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:41" (1/1) ... [2021-08-30 17:03:41,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:41" (1/1) ... [2021-08-30 17:03:41,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:41" (1/1) ... [2021-08-30 17:03:41,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:03:41,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:03:41,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:03:41,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:03:41,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:41" (1/1) ... [2021-08-30 17:03:41,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:03:41,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:03:41,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:03:41,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:03:41,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:03:41,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:03:41,222 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:03:41,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:03:41,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:03:41,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:03:41,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:03:41,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:03:41,224 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-08-30 17:03:41,224 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-08-30 17:03:41,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:03:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:03:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:03:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:03:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:03:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:03:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:03:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:03:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:03:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:03:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:03:41,227 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:03:41,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:03:41,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:03:41,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:03:41,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:03:41,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:03:41,228 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:03:41,228 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:03:41,228 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:03:41,228 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:03:41,228 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:03:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:03:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:03:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:03:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:03:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:03:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:03:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:03:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:03:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:03:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:03:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:03:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:03:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:03:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:03:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:03:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:03:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:03:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:03:41,233 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:03:41,233 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:03:41,233 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:03:41,234 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:03:41,234 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:03:41,234 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:03:41,234 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:03:41,234 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:03:41,234 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:03:41,235 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:03:41,235 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:03:41,235 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:03:41,235 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:03:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:03:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:03:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:03:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:03:41,236 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:03:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:03:41,237 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:03:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:03:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:03:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:03:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:03:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:03:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:03:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:03:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:03:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:03:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:03:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:03:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:03:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:03:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:03:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:03:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:03:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:03:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:03:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:03:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:03:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:03:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:03:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:03:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:03:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:03:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:03:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:03:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:03:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:03:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:03:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:03:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:03:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:03:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:03:41,244 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:03:41,244 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:03:41,244 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:03:41,244 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:03:41,244 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:03:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:03:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:03:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:03:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:03:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:03:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:03:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:03:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:03:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:03:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:03:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:03:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:03:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:03:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:03:41,252 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-08-30 17:03:41,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:03:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:03:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-08-30 17:03:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:03:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:03:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:03:41,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:03:41,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 17:03:41,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:03:41,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 17:03:41,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 17:03:41,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:03:41,600 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-30 17:03:41,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:03:41 BoogieIcfgContainer [2021-08-30 17:03:41,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:03:41,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:03:41,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:03:41,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:03:41,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:03:40" (1/3) ... [2021-08-30 17:03:41,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dbf5522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:03:41, skipping insertion in model container [2021-08-30 17:03:41,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:41" (2/3) ... [2021-08-30 17:03:41,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dbf5522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:03:41, skipping insertion in model container [2021-08-30 17:03:41,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:03:41" (3/3) ... [2021-08-30 17:03:41,609 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2021-08-30 17:03:41,613 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:03:41,613 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-08-30 17:03:41,646 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:03:41,652 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:03:41,652 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-08-30 17:03:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-30 17:03:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-30 17:03:41,670 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:41,670 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:41,671 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:41,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:41,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1420223000, now seen corresponding path program 1 times [2021-08-30 17:03:41,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:03:41,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033821461] [2021-08-30 17:03:41,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:41,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:03:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:41,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:03:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:42,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:03:42,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033821461] [2021-08-30 17:03:42,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033821461] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:42,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:42,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 17:03:42,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513983268] [2021-08-30 17:03:42,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:03:42,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:03:42,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:03:42,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:03:42,044 INFO L87 Difference]: Start difference. First operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:03:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:42,304 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-08-30 17:03:42,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:03:42,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-30 17:03:42,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:42,317 INFO L225 Difference]: With dead ends: 62 [2021-08-30 17:03:42,318 INFO L226 Difference]: Without dead ends: 59 [2021-08-30 17:03:42,320 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 75.00ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:03:42,324 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.95ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 197.48ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:42,326 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 20 Invalid, 215 Unknown, 0 Unchecked, 7.95ms Time], IncrementalHoareTripleChecker [9 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 197.48ms Time] [2021-08-30 17:03:42,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-30 17:03:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2021-08-30 17:03:42,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 42 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-08-30 17:03:42,360 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2021-08-30 17:03:42,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:42,360 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-08-30 17:03:42,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:03:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-08-30 17:03:42,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-30 17:03:42,361 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:42,361 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:42,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 17:03:42,362 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:42,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1420222999, now seen corresponding path program 1 times [2021-08-30 17:03:42,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:03:42,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262478421] [2021-08-30 17:03:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:42,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:03:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:42,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:03:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:42,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:03:42,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262478421] [2021-08-30 17:03:42,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262478421] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:42,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:42,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 17:03:42,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247277862] [2021-08-30 17:03:42,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:03:42,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:03:42,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:03:42,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:03:42,563 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:03:42,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:42,762 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-08-30 17:03:42,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:03:42,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-30 17:03:42,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:42,764 INFO L225 Difference]: With dead ends: 58 [2021-08-30 17:03:42,764 INFO L226 Difference]: Without dead ends: 58 [2021-08-30 17:03:42,766 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 78.67ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:03:42,770 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.04ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 142.90ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:42,771 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 15 Invalid, 205 Unknown, 0 Unchecked, 6.04ms Time], IncrementalHoareTripleChecker [7 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 142.90ms Time] [2021-08-30 17:03:42,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-30 17:03:42,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2021-08-30 17:03:42,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:42,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-08-30 17:03:42,783 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-08-30 17:03:42,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:42,784 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-08-30 17:03:42,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:03:42,784 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-08-30 17:03:42,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 17:03:42,785 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:42,785 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:42,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 17:03:42,785 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:42,786 INFO L82 PathProgramCache]: Analyzing trace with hash 965296970, now seen corresponding path program 1 times [2021-08-30 17:03:42,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:03:42,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998451576] [2021-08-30 17:03:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:42,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:03:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:42,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:03:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:42,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:03:42,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998451576] [2021-08-30 17:03:42,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998451576] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:42,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:42,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 17:03:42,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604988962] [2021-08-30 17:03:42,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:03:42,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:03:42,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:03:42,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:03:42,986 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:03:43,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:43,153 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-08-30 17:03:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:03:43,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-30 17:03:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:43,156 INFO L225 Difference]: With dead ends: 57 [2021-08-30 17:03:43,157 INFO L226 Difference]: Without dead ends: 57 [2021-08-30 17:03:43,157 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.64ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:03:43,163 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 34 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.15ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.77ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:43,164 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 15 Invalid, 199 Unknown, 0 Unchecked, 2.15ms Time], IncrementalHoareTripleChecker [9 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 122.77ms Time] [2021-08-30 17:03:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-30 17:03:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2021-08-30 17:03:43,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 40 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-08-30 17:03:43,174 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 11 [2021-08-30 17:03:43,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:43,174 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-08-30 17:03:43,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:03:43,175 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-08-30 17:03:43,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 17:03:43,175 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:43,175 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:43,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 17:03:43,176 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:43,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:43,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2075049684, now seen corresponding path program 1 times [2021-08-30 17:03:43,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:03:43,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908513176] [2021-08-30 17:03:43,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:43,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:03:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:03:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:43,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 17:03:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:43,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:03:43,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908513176] [2021-08-30 17:03:43,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908513176] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:43,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:43,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 17:03:43,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189860293] [2021-08-30 17:03:43,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 17:03:43,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:03:43,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 17:03:43,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:03:43,321 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:43,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:43,614 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-08-30 17:03:43,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:03:43,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-08-30 17:03:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:43,616 INFO L225 Difference]: With dead ends: 52 [2021-08-30 17:03:43,616 INFO L226 Difference]: Without dead ends: 52 [2021-08-30 17:03:43,616 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 155.96ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-30 17:03:43,617 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 75 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.04ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 177.08ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:43,617 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 23 Invalid, 272 Unknown, 0 Unchecked, 2.04ms Time], IncrementalHoareTripleChecker [19 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 177.08ms Time] [2021-08-30 17:03:43,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-30 17:03:43,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-08-30 17:03:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 38 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:43,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-08-30 17:03:43,624 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 17 [2021-08-30 17:03:43,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:43,626 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-08-30 17:03:43,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:43,626 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-08-30 17:03:43,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 17:03:43,627 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:43,627 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:43,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 17:03:43,627 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:43,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:43,628 INFO L82 PathProgramCache]: Analyzing trace with hash -2075049683, now seen corresponding path program 1 times [2021-08-30 17:03:43,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:03:43,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706324351] [2021-08-30 17:03:43,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:43,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:03:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:43,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:03:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 17:03:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:43,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:03:43,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706324351] [2021-08-30 17:03:43,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706324351] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:43,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:43,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-30 17:03:43,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790971691] [2021-08-30 17:03:43,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 17:03:43,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:03:43,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 17:03:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-08-30 17:03:43,775 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 17:03:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:44,087 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-08-30 17:03:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 17:03:44,088 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-08-30 17:03:44,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:44,091 INFO L225 Difference]: With dead ends: 45 [2021-08-30 17:03:44,092 INFO L226 Difference]: Without dead ends: 45 [2021-08-30 17:03:44,093 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 205.16ms TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-08-30 17:03:44,094 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 81 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 157.09ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:44,094 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 28 Invalid, 266 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [22 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 157.09ms Time] [2021-08-30 17:03:44,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-08-30 17:03:44,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-08-30 17:03:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 34 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-08-30 17:03:44,110 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 17 [2021-08-30 17:03:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:44,110 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-08-30 17:03:44,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 17:03:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-08-30 17:03:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 17:03:44,112 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:44,112 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:44,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 17:03:44,112 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_dataErr4ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:44,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:44,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1129452196, now seen corresponding path program 1 times [2021-08-30 17:03:44,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:03:44,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613163421] [2021-08-30 17:03:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:44,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:03:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:44,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:03:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:44,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 17:03:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:44,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:03:44,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613163421] [2021-08-30 17:03:44,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613163421] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:44,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:44,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-30 17:03:44,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617178131] [2021-08-30 17:03:44,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 17:03:44,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:03:44,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 17:03:44,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-08-30 17:03:44,311 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:44,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:44,596 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-08-30 17:03:44,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 17:03:44,596 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-08-30 17:03:44,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:44,597 INFO L225 Difference]: With dead ends: 44 [2021-08-30 17:03:44,597 INFO L226 Difference]: Without dead ends: 44 [2021-08-30 17:03:44,598 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 221.16ms TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-08-30 17:03:44,598 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 76 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.99ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:44,599 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 36 Invalid, 290 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [31 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 131.99ms Time] [2021-08-30 17:03:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-30 17:03:44,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-08-30 17:03:44,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 33 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-08-30 17:03:44,601 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 22 [2021-08-30 17:03:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:44,602 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-08-30 17:03:44,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-08-30 17:03:44,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 17:03:44,603 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:44,603 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:44,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 17:03:44,603 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_dataErr5ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:44,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:44,604 INFO L82 PathProgramCache]: Analyzing trace with hash -653279632, now seen corresponding path program 1 times [2021-08-30 17:03:44,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:03:44,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672099885] [2021-08-30 17:03:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:44,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:03:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:03:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 17:03:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:44,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:03:44,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672099885] [2021-08-30 17:03:44,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672099885] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:44,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:44,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-30 17:03:44,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414614351] [2021-08-30 17:03:44,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 17:03:44,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:03:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 17:03:44,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-08-30 17:03:44,781 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:45,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:45,093 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-08-30 17:03:45,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 17:03:45,094 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-08-30 17:03:45,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:45,094 INFO L225 Difference]: With dead ends: 43 [2021-08-30 17:03:45,094 INFO L226 Difference]: Without dead ends: 43 [2021-08-30 17:03:45,095 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 227.21ms TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-08-30 17:03:45,096 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 68 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.86ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 156.36ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:45,096 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 33 Invalid, 283 Unknown, 0 Unchecked, 1.86ms Time], IncrementalHoareTripleChecker [19 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 156.36ms Time] [2021-08-30 17:03:45,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-30 17:03:45,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-08-30 17:03:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-08-30 17:03:45,100 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 23 [2021-08-30 17:03:45,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:45,101 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-08-30 17:03:45,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:45,101 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-08-30 17:03:45,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:03:45,102 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:45,102 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:45,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 17:03:45,102 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_dataErr6ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:45,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:45,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1223167966, now seen corresponding path program 1 times [2021-08-30 17:03:45,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:03:45,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296538549] [2021-08-30 17:03:45,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:45,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:03:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:45,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:03:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:45,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 17:03:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:45,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:03:45,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296538549] [2021-08-30 17:03:45,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296538549] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:45,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:45,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-30 17:03:45,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189253526] [2021-08-30 17:03:45,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 17:03:45,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:03:45,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 17:03:45,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-08-30 17:03:45,257 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:45,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:45,565 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-08-30 17:03:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:03:45,566 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-08-30 17:03:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:45,566 INFO L225 Difference]: With dead ends: 42 [2021-08-30 17:03:45,566 INFO L226 Difference]: Without dead ends: 42 [2021-08-30 17:03:45,566 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 220.25ms TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-08-30 17:03:45,567 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 39 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 128.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 158.31ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:45,567 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 33 Invalid, 301 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [15 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 158.31ms Time] [2021-08-30 17:03:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-30 17:03:45,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-08-30 17:03:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 31 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:45,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-08-30 17:03:45,570 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 24 [2021-08-30 17:03:45,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:45,571 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-08-30 17:03:45,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-08-30 17:03:45,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-30 17:03:45,571 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:45,572 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:45,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 17:03:45,572 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_dataErr7ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:45,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:45,573 INFO L82 PathProgramCache]: Analyzing trace with hash -736498638, now seen corresponding path program 1 times [2021-08-30 17:03:45,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:03:45,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450120282] [2021-08-30 17:03:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:45,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:03:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:03:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:45,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 17:03:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:45,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:03:45,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450120282] [2021-08-30 17:03:45,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450120282] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:45,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:45,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 17:03:45,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242011878] [2021-08-30 17:03:45,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:03:45,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:03:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:03:45,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:03:45,628 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:45,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:45,759 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-08-30 17:03:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:03:45,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-08-30 17:03:45,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:45,759 INFO L225 Difference]: With dead ends: 41 [2021-08-30 17:03:45,760 INFO L226 Difference]: Without dead ends: 41 [2021-08-30 17:03:45,760 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.39ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:03:45,760 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.43ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:45,760 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 30 Invalid, 129 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [8 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 69.43ms Time] [2021-08-30 17:03:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-30 17:03:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-08-30 17:03:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:45,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-08-30 17:03:45,763 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 25 [2021-08-30 17:03:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:45,763 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-08-30 17:03:45,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-08-30 17:03:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 17:03:45,764 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:45,764 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:45,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 17:03:45,764 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting free_dataErr8ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:45,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:45,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1356621216, now seen corresponding path program 1 times [2021-08-30 17:03:45,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:03:45,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166708859] [2021-08-30 17:03:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:45,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:03:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:45,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:03:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:45,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 17:03:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:45,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:03:45,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166708859] [2021-08-30 17:03:45,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166708859] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:45,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:45,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-30 17:03:45,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932586742] [2021-08-30 17:03:45,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 17:03:45,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:03:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 17:03:45,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-08-30 17:03:45,989 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:46,367 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-08-30 17:03:46,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-30 17:03:46,368 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-08-30 17:03:46,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:46,368 INFO L225 Difference]: With dead ends: 40 [2021-08-30 17:03:46,368 INFO L226 Difference]: Without dead ends: 40 [2021-08-30 17:03:46,369 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 324.79ms TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-08-30 17:03:46,369 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 76 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 138.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.47ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.47ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:46,370 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 33 Invalid, 317 Unknown, 0 Unchecked, 2.47ms Time], IncrementalHoareTripleChecker [24 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 164.47ms Time] [2021-08-30 17:03:46,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-30 17:03:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-08-30 17:03:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-08-30 17:03:46,372 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 26 [2021-08-30 17:03:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:46,372 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-08-30 17:03:46,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-08-30 17:03:46,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 17:03:46,373 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:46,373 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:46,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-30 17:03:46,374 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:46,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:46,374 INFO L82 PathProgramCache]: Analyzing trace with hash 849725517, now seen corresponding path program 1 times [2021-08-30 17:03:46,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:03:46,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813341850] [2021-08-30 17:03:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:46,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:03:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:03:46,405 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 17:03:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:03:46,459 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 17:03:46,459 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 17:03:46,460 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (18 of 19 remaining) [2021-08-30 17:03:46,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr0REQUIRES_VIOLATION (17 of 19 remaining) [2021-08-30 17:03:46,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr1REQUIRES_VIOLATION (16 of 19 remaining) [2021-08-30 17:03:46,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr2REQUIRES_VIOLATION (15 of 19 remaining) [2021-08-30 17:03:46,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr3REQUIRES_VIOLATION (14 of 19 remaining) [2021-08-30 17:03:46,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr0REQUIRES_VIOLATION (13 of 19 remaining) [2021-08-30 17:03:46,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr1REQUIRES_VIOLATION (12 of 19 remaining) [2021-08-30 17:03:46,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr2REQUIRES_VIOLATION (11 of 19 remaining) [2021-08-30 17:03:46,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr3REQUIRES_VIOLATION (10 of 19 remaining) [2021-08-30 17:03:46,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr4ASSERT_VIOLATIONMEMORY_FREE (9 of 19 remaining) [2021-08-30 17:03:46,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr5ASSERT_VIOLATIONMEMORY_FREE (8 of 19 remaining) [2021-08-30 17:03:46,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr6ASSERT_VIOLATIONMEMORY_FREE (7 of 19 remaining) [2021-08-30 17:03:46,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr7ASSERT_VIOLATIONMEMORY_FREE (6 of 19 remaining) [2021-08-30 17:03:46,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE (5 of 19 remaining) [2021-08-30 17:03:46,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE (4 of 19 remaining) [2021-08-30 17:03:46,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr10REQUIRES_VIOLATION (3 of 19 remaining) [2021-08-30 17:03:46,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr11REQUIRES_VIOLATION (2 of 19 remaining) [2021-08-30 17:03:46,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr12REQUIRES_VIOLATION (1 of 19 remaining) [2021-08-30 17:03:46,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr13REQUIRES_VIOLATION (0 of 19 remaining) [2021-08-30 17:03:46,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-30 17:03:46,471 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:03:46,481 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 17:03:46,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:03:46 BoogieIcfgContainer [2021-08-30 17:03:46,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:03:46,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:03:46,494 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:03:46,494 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:03:46,495 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:03:41" (3/4) ... [2021-08-30 17:03:46,497 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:03:46,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:03:46,497 INFO L158 Benchmark]: Toolchain (without parser) took 5766.29ms. Allocated memory was 54.5MB in the beginning and 100.7MB in the end (delta: 46.1MB). Free memory was 30.3MB in the beginning and 61.9MB in the end (delta: -31.6MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2021-08-30 17:03:46,498 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:03:46,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.55ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 30.1MB in the beginning and 46.7MB in the end (delta: -16.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-08-30 17:03:46,498 INFO L158 Benchmark]: Boogie Preprocessor took 56.36ms. Allocated memory is still 69.2MB. Free memory was 46.5MB in the beginning and 44.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 17:03:46,499 INFO L158 Benchmark]: RCFGBuilder took 448.73ms. Allocated memory is still 69.2MB. Free memory was 44.0MB in the beginning and 40.3MB in the end (delta: 3.7MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2021-08-30 17:03:46,499 INFO L158 Benchmark]: TraceAbstraction took 4889.95ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 39.8MB in the beginning and 62.8MB in the end (delta: -23.0MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-08-30 17:03:46,499 INFO L158 Benchmark]: Witness Printer took 3.16ms. Allocated memory is still 100.7MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:03:46,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.55ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 30.1MB in the beginning and 46.7MB in the end (delta: -16.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.36ms. Allocated memory is still 69.2MB. Free memory was 46.5MB in the beginning and 44.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 448.73ms. Allocated memory is still 69.2MB. Free memory was 44.0MB in the beginning and 40.3MB in the end (delta: 3.7MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4889.95ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 39.8MB in the beginning and 62.8MB in the end (delta: -23.0MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Witness Printer took 3.16ms. Allocated memory is still 100.7MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; VAL [data={3:0}] [L545] CALL alloc_data(&data) VAL [pdata={3:0}] [L529] pdata->lo = malloc(16) VAL [malloc(16)={-1:0}, pdata={3:0}, pdata={3:0}] [L530] pdata->hi = malloc(24) VAL [malloc(24)={-2:0}, pdata={3:0}, pdata={3:0}] [L545] RET alloc_data(&data) VAL [data={3:0}] [L546] CALL free_data(&data) VAL [data={3:0}] [L534] EXPR data->lo VAL [data={3:0}, data={3:0}, data->lo={-1:0}] [L534] void *lo = data->lo; [L535] EXPR data->hi VAL [data={3:0}, data={3:0}, data->hi={-2:0}, lo={-1:0}] [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L540] data->lo = (void *) 0 VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L541] data->hi = (void *) 0 VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L546] RET free_data(&data) VAL [data={3:0}] [L547] return 0; [L547] return 0; VAL [\result=0] - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 73 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 4825.22ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 15.64ms, AutomataDifference: 2756.42ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.50ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 555 SdHoareTripleChecker+Valid, 1477.88ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 553 mSDsluCounter, 266 SdHoareTripleChecker+Invalid, 1189.62ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 591 mSDsCounter, 163 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2314 IncrementalHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 163 mSolverCounterUnsat, 54 mSDtfsCounter, 2314 mSolverCounterSat, 28.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1657.23ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 74.47ms AutomataMinimizationTime, 10 MinimizatonAttempts, 51 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.34ms SsaConstructionTime, 214.17ms SatisfiabilityAnalysisTime, 1438.83ms InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 1162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:03:46,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:03:48,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:03:48,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:03:48,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:03:48,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:03:48,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:03:48,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:03:48,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:03:48,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:03:48,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:03:48,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:03:48,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:03:48,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:03:48,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:03:48,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:03:48,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:03:48,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:03:48,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:03:48,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:03:48,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:03:48,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:03:48,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:03:48,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:03:48,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:03:48,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:03:48,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:03:48,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:03:48,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:03:48,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:03:48,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:03:48,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:03:48,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:03:48,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:03:48,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:03:48,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:03:48,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:03:48,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:03:48,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:03:48,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:03:48,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:03:48,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:03:48,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:03:48,384 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:03:48,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:03:48,385 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:03:48,385 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:03:48,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:03:48,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:03:48,387 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:03:48,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:03:48,387 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:03:48,387 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:03:48,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:03:48,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:03:48,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:03:48,388 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:03:48,388 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:03:48,389 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:03:48,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:03:48,389 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:03:48,389 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:03:48,390 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:03:48,390 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:03:48,390 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:03:48,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:03:48,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:03:48,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:03:48,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:03:48,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:03:48,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:03:48,392 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:03:48,392 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:03:48,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:03:48,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:03:48,393 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0c6505355e23ab050a0b1754726876dca60bcf4 [2021-08-30 17:03:48,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:03:48,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:03:48,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:03:48,686 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:03:48,687 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:03:48,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0019-2.i [2021-08-30 17:03:48,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08cef462b/1358b4aeaa64450583c0d00d7482d037/FLAG2b0db5ac3 [2021-08-30 17:03:49,253 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:03:49,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0019-2.i [2021-08-30 17:03:49,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08cef462b/1358b4aeaa64450583c0d00d7482d037/FLAG2b0db5ac3 [2021-08-30 17:03:49,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08cef462b/1358b4aeaa64450583c0d00d7482d037 [2021-08-30 17:03:49,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:03:49,761 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:03:49,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:03:49,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:03:49,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:03:49,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:03:49" (1/1) ... [2021-08-30 17:03:49,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466fbb45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:49, skipping insertion in model container [2021-08-30 17:03:49,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:03:49" (1/1) ... [2021-08-30 17:03:49,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:03:49,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:03:50,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:03:50,071 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:03:50,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:03:50,154 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:03:50,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:50 WrapperNode [2021-08-30 17:03:50,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:03:50,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:03:50,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:03:50,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:03:50,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:50" (1/1) ... [2021-08-30 17:03:50,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:50" (1/1) ... [2021-08-30 17:03:50,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:50" (1/1) ... [2021-08-30 17:03:50,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:50" (1/1) ... [2021-08-30 17:03:50,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:50" (1/1) ... [2021-08-30 17:03:50,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:50" (1/1) ... [2021-08-30 17:03:50,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:50" (1/1) ... [2021-08-30 17:03:50,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:03:50,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:03:50,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:03:50,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:03:50,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:50" (1/1) ... [2021-08-30 17:03:50,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:03:50,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:03:50,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:03:50,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:03:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:03:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:03:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:03:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:03:50,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:03:50,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:03:50,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:03:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:03:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:03:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-08-30 17:03:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-08-30 17:03:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:03:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:03:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:03:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:03:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:03:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:03:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:03:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:03:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:03:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:03:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:03:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:03:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:03:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:03:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:03:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:03:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:03:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:03:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:03:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:03:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:03:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:03:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:03:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:03:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:03:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:03:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:03:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:03:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:03:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:03:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:03:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:03:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:03:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:03:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:03:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:03:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:03:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:03:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:03:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:03:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:03:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:03:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:03:50,323 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:03:50,323 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:03:50,323 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:03:50,323 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:03:50,323 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:03:50,323 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:03:50,324 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:03:50,324 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:03:50,324 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:03:50,324 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:03:50,325 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:03:50,325 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:03:50,326 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:03:50,326 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:03:50,326 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:03:50,326 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:03:50,327 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:03:50,327 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:03:50,327 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:03:50,327 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:03:50,327 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:03:50,327 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:03:50,328 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:03:50,328 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:03:50,328 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:03:50,328 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:03:50,335 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:03:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:03:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:03:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:03:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:03:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:03:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:03:50,337 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:03:50,337 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:03:50,337 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:03:50,337 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:03:50,337 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:03:50,337 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:03:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:03:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:03:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:03:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:03:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:03:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:03:50,338 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:03:50,339 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:03:50,339 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:03:50,339 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:03:50,339 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:03:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:03:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:03:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:03:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:03:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:03:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:03:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:03:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:03:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:03:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:03:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:03:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:03:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:03:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:03:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:03:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:03:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:03:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:03:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:03:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:03:50,344 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-08-30 17:03:50,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:03:50,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:03:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-08-30 17:03:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:03:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:03:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:03:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:03:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-30 17:03:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:03:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:03:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-30 17:03:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-30 17:03:50,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:03:50,692 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-30 17:03:50,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:03:50 BoogieIcfgContainer [2021-08-30 17:03:50,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:03:50,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:03:50,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:03:50,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:03:50,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:03:49" (1/3) ... [2021-08-30 17:03:50,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1516f0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:03:50, skipping insertion in model container [2021-08-30 17:03:50,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:03:50" (2/3) ... [2021-08-30 17:03:50,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1516f0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:03:50, skipping insertion in model container [2021-08-30 17:03:50,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:03:50" (3/3) ... [2021-08-30 17:03:50,700 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2021-08-30 17:03:50,704 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:03:50,704 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-08-30 17:03:50,739 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:03:50,745 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:03:50,745 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-08-30 17:03:50,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-30 17:03:50,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-30 17:03:50,762 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:50,762 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:50,763 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:50,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:50,767 INFO L82 PathProgramCache]: Analyzing trace with hash 153654014, now seen corresponding path program 1 times [2021-08-30 17:03:50,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:03:50,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824620081] [2021-08-30 17:03:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:50,778 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:03:50,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:03:50,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:03:50,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 17:03:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:50,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:03:50,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:03:51,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:03:51,137 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 17:03:51,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-08-30 17:03:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:51,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:03:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:51,272 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:03:51,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824620081] [2021-08-30 17:03:51,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824620081] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:51,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:51,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-08-30 17:03:51,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620893146] [2021-08-30 17:03:51,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:03:51,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:03:51,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:03:51,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:03:51,309 INFO L87 Difference]: Start difference. First operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:03:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:51,569 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-08-30 17:03:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:03:51,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-30 17:03:51,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:51,577 INFO L225 Difference]: With dead ends: 53 [2021-08-30 17:03:51,577 INFO L226 Difference]: Without dead ends: 50 [2021-08-30 17:03:51,579 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.99ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:03:51,581 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 180.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.62ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 214.71ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:51,582 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 21 Invalid, 177 Unknown, 0 Unchecked, 3.62ms Time], IncrementalHoareTripleChecker [5 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 214.71ms Time] [2021-08-30 17:03:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-30 17:03:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-08-30 17:03:51,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 42 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:51,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-08-30 17:03:51,609 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2021-08-30 17:03:51,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:51,610 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-08-30 17:03:51,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:03:51,610 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-08-30 17:03:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-30 17:03:51,610 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:51,611 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:51,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:03:51,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:03:51,820 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:51,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:51,822 INFO L82 PathProgramCache]: Analyzing trace with hash 153654015, now seen corresponding path program 1 times [2021-08-30 17:03:51,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:03:51,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703015270] [2021-08-30 17:03:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:51,825 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:03:51,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:03:51,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:03:51,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 17:03:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:51,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-30 17:03:51,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:03:51,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:03:51,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:03:52,066 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:03:52,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-08-30 17:03:52,074 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 17:03:52,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-08-30 17:03:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:52,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:03:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:52,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:03:52,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703015270] [2021-08-30 17:03:52,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703015270] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:52,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:52,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-30 17:03:52,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693929178] [2021-08-30 17:03:52,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 17:03:52,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:03:52,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 17:03:52,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:03:52,505 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:03:52,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:52,762 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-08-30 17:03:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:03:52,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-30 17:03:52,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:52,764 INFO L225 Difference]: With dead ends: 49 [2021-08-30 17:03:52,764 INFO L226 Difference]: Without dead ends: 49 [2021-08-30 17:03:52,764 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 305.97ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:03:52,765 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 226.82ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:52,766 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 247 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 124 Unchecked, 226.82ms Time] [2021-08-30 17:03:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-30 17:03:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-30 17:03:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:52,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-08-30 17:03:52,771 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-08-30 17:03:52,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:52,771 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-08-30 17:03:52,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:03:52,771 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-08-30 17:03:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 17:03:52,772 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:52,772 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:52,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-30 17:03:52,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:03:52,981 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:52,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:52,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1632619936, now seen corresponding path program 1 times [2021-08-30 17:03:52,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:03:52,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588310389] [2021-08-30 17:03:52,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:52,983 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:03:52,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:03:52,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:03:52,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 17:03:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:53,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-30 17:03:53,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:03:53,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:03:53,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:03:53,185 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:03:53,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-08-30 17:03:53,197 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 17:03:53,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-08-30 17:03:53,336 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-08-30 17:03:53,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 43 [2021-08-30 17:03:53,346 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 17:03:53,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2021-08-30 17:03:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:53,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:03:55,639 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-08-30 17:03:55,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-08-30 17:03:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:56,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:03:56,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588310389] [2021-08-30 17:03:56,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588310389] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:56,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:56,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 10 [2021-08-30 17:03:56,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971015336] [2021-08-30 17:03:56,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 17:03:56,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:03:56,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 17:03:56,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2021-08-30 17:03:56,247 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:03:56,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:56,546 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-08-30 17:03:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:03:56,547 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-30 17:03:56,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:56,548 INFO L225 Difference]: With dead ends: 48 [2021-08-30 17:03:56,548 INFO L226 Difference]: Without dead ends: 48 [2021-08-30 17:03:56,548 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2680.93ms TimeCoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-08-30 17:03:56,549 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 213.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 256.51ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:56,549 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 272 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 157 Unchecked, 256.51ms Time] [2021-08-30 17:03:56,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-30 17:03:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-08-30 17:03:56,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 40 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-08-30 17:03:56,552 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 11 [2021-08-30 17:03:56,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:56,552 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-08-30 17:03:56,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:03:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-08-30 17:03:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 17:03:56,553 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:56,553 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:56,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-30 17:03:56,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:03:56,764 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:56,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1202400066, now seen corresponding path program 1 times [2021-08-30 17:03:56,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:03:56,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375002838] [2021-08-30 17:03:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:56,766 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:03:56,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:03:56,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:03:56,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 17:03:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:56,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 17:03:56,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:03:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:56,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:03:57,069 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-08-30 17:03:57,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-08-30 17:03:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:57,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:03:57,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375002838] [2021-08-30 17:03:57,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375002838] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:57,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:57,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-08-30 17:03:57,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939937989] [2021-08-30 17:03:57,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:03:57,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:03:57,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:03:57,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:03:57,099 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:57,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:57,460 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-08-30 17:03:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:03:57,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-08-30 17:03:57,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:57,462 INFO L225 Difference]: With dead ends: 52 [2021-08-30 17:03:57,462 INFO L226 Difference]: Without dead ends: 52 [2021-08-30 17:03:57,462 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 76.58ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:03:57,463 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 44 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 283.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.19ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 329.91ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:57,463 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 21 Invalid, 211 Unknown, 0 Unchecked, 2.19ms Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 329.91ms Time] [2021-08-30 17:03:57,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-30 17:03:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-08-30 17:03:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 38 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-08-30 17:03:57,469 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 17 [2021-08-30 17:03:57,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:57,469 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-08-30 17:03:57,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:03:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-08-30 17:03:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 17:03:57,470 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:57,470 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:57,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:03:57,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:03:57,680 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:57,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:57,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1202400067, now seen corresponding path program 1 times [2021-08-30 17:03:57,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:03:57,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380605493] [2021-08-30 17:03:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:57,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:03:57,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:03:57,682 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:03:57,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 17:03:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:57,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:03:57,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:03:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:57,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:03:58,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-08-30 17:03:58,362 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-30 17:03:58,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-08-30 17:03:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:58,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:03:58,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380605493] [2021-08-30 17:03:58,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380605493] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:03:58,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:03:58,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-30 17:03:58,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165908291] [2021-08-30 17:03:58,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:03:58,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:03:58,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:03:58,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-08-30 17:03:58,630 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 14 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:59,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:03:59,369 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-08-30 17:03:59,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:03:59,370 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2021-08-30 17:03:59,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:03:59,370 INFO L225 Difference]: With dead ends: 42 [2021-08-30 17:03:59,370 INFO L226 Difference]: Without dead ends: 42 [2021-08-30 17:03:59,371 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 497.96ms TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-08-30 17:03:59,372 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 70 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 521.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.30ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 601.08ms IncrementalHoareTripleChecker+Time [2021-08-30 17:03:59,372 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 33 Invalid, 255 Unknown, 0 Unchecked, 2.30ms Time], IncrementalHoareTripleChecker [12 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 601.08ms Time] [2021-08-30 17:03:59,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-30 17:03:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-08-30 17:03:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 34 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-08-30 17:03:59,379 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 17 [2021-08-30 17:03:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:03:59,379 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-08-30 17:03:59,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:03:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-08-30 17:03:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 17:03:59,380 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:03:59,381 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:03:59,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-08-30 17:03:59,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:03:59,589 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_dataErr4ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:03:59,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:03:59,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1648280676, now seen corresponding path program 1 times [2021-08-30 17:03:59,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:03:59,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065250311] [2021-08-30 17:03:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:03:59,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:03:59,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:03:59,591 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:03:59,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 17:03:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:03:59,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-30 17:03:59,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:03:59,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-30 17:03:59,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-08-30 17:03:59,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:03:59,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:00,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-08-30 17:04:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:00,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:00,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065250311] [2021-08-30 17:04:00,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065250311] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:00,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:00,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-08-30 17:04:00,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503657049] [2021-08-30 17:04:00,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 17:04:00,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 17:04:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-08-30 17:04:00,096 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:04:00,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:00,612 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-08-30 17:04:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:04:00,613 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-08-30 17:04:00,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:00,615 INFO L225 Difference]: With dead ends: 43 [2021-08-30 17:04:00,615 INFO L226 Difference]: Without dead ends: 43 [2021-08-30 17:04:00,615 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 215.56ms TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-08-30 17:04:00,617 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 64 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 335.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 397.44ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:00,617 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 39 Invalid, 267 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [12 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 397.44ms Time] [2021-08-30 17:04:00,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-30 17:04:00,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-08-30 17:04:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:04:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-08-30 17:04:00,622 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 22 [2021-08-30 17:04:00,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:00,623 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-08-30 17:04:00,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:04:00,623 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-08-30 17:04:00,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 17:04:00,624 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:00,624 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:00,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:00,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:00,825 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_dataErr5ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:04:00,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:00,825 INFO L82 PathProgramCache]: Analyzing trace with hash 442906694, now seen corresponding path program 1 times [2021-08-30 17:04:00,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:00,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163413811] [2021-08-30 17:04:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:00,826 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:00,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:00,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:00,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 17:04:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:00,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-30 17:04:00,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:01,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-08-30 17:04:01,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-08-30 17:04:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:01,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:01,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-08-30 17:04:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:02,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:02,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163413811] [2021-08-30 17:04:02,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163413811] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:02,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:02,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 20 [2021-08-30 17:04:02,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016445425] [2021-08-30 17:04:02,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-30 17:04:02,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:02,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-30 17:04:02,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-08-30 17:04:02,097 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:04:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:02,191 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-08-30 17:04:02,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:04:02,192 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2021-08-30 17:04:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:02,193 INFO L225 Difference]: With dead ends: 39 [2021-08-30 17:04:02,193 INFO L226 Difference]: Without dead ends: 39 [2021-08-30 17:04:02,193 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 593.63ms TimeCoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-08-30 17:04:02,194 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 88.22ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:02,194 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 165 Unknown, 0 Unchecked, 0.70ms Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 110 Unchecked, 88.22ms Time] [2021-08-30 17:04:02,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-08-30 17:04:02,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-08-30 17:04:02,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 31 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:04:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-08-30 17:04:02,197 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 23 [2021-08-30 17:04:02,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:02,198 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-08-30 17:04:02,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:04:02,198 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-08-30 17:04:02,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:04:02,198 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:02,198 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:02,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:02,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:02,408 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_dataErr6ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:04:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:02,408 INFO L82 PathProgramCache]: Analyzing trace with hash 845205726, now seen corresponding path program 1 times [2021-08-30 17:04:02,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:02,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147678653] [2021-08-30 17:04:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:02,409 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:02,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:02,410 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:02,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-30 17:04:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:02,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-30 17:04:02,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:02,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:04:02,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-08-30 17:04:02,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2021-08-30 17:04:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:02,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:02,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2021-08-30 17:04:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:03,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:03,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147678653] [2021-08-30 17:04:03,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147678653] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:03,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:03,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-08-30 17:04:03,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600183234] [2021-08-30 17:04:03,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 17:04:03,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:03,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 17:04:03,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-08-30 17:04:03,080 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:04:03,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:03,597 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-08-30 17:04:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 17:04:03,598 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-08-30 17:04:03,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:03,598 INFO L225 Difference]: With dead ends: 41 [2021-08-30 17:04:03,598 INFO L226 Difference]: Without dead ends: 41 [2021-08-30 17:04:03,599 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 441.15ms TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-08-30 17:04:03,599 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 295.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 347.56ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:03,600 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 41 Invalid, 297 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [5 Valid, 259 Invalid, 0 Unknown, 33 Unchecked, 347.56ms Time] [2021-08-30 17:04:03,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-30 17:04:03,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-08-30 17:04:03,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:04:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-08-30 17:04:03,603 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 24 [2021-08-30 17:04:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:03,603 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-08-30 17:04:03,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:04:03,603 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-08-30 17:04:03,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 17:04:03,604 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:03,604 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:03,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:03,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:03,809 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_dataErr8ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:04:03,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:03,809 INFO L82 PathProgramCache]: Analyzing trace with hash 493887008, now seen corresponding path program 1 times [2021-08-30 17:04:03,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:03,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648897839] [2021-08-30 17:04:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:03,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:03,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:03,811 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:03,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-30 17:04:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:03,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-30 17:04:03,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:04,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-08-30 17:04:04,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-08-30 17:04:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:04,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:05,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:05,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648897839] [2021-08-30 17:04:05,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648897839] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:05,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:05,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 3] imperfect sequences [] total 13 [2021-08-30 17:04:05,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902942524] [2021-08-30 17:04:05,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:04:05,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:05,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:04:05,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-08-30 17:04:05,023 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 14 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:04:05,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:05,116 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-08-30 17:04:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:04:05,117 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2021-08-30 17:04:05,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:05,117 INFO L225 Difference]: With dead ends: 37 [2021-08-30 17:04:05,117 INFO L226 Difference]: Without dead ends: 37 [2021-08-30 17:04:05,118 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 480.09ms TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-08-30 17:04:05,118 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 89.04ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:05,119 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 178 Unknown, 0 Unchecked, 0.74ms Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 128 Unchecked, 89.04ms Time] [2021-08-30 17:04:05,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-30 17:04:05,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-30 17:04:05,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:04:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-08-30 17:04:05,122 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 26 [2021-08-30 17:04:05,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:05,122 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-08-30 17:04:05,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:04:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-08-30 17:04:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 17:04:05,123 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:05,123 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:05,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-08-30 17:04:05,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:05,329 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting free_dataErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:04:05,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:05,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1869371830, now seen corresponding path program 1 times [2021-08-30 17:04:05,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:05,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334936876] [2021-08-30 17:04:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:05,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:05,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:05,333 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:05,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-30 17:04:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:05,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-30 17:04:05,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:05,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:04:05,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-08-30 17:04:05,527 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-30 17:04:05,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-08-30 17:04:05,573 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-08-30 17:04:05,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-08-30 17:04:05,773 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-30 17:04:05,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2021-08-30 17:04:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:05,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:06,261 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-30 17:04:06,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 903 treesize of output 823 [2021-08-30 17:04:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:06,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:06,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334936876] [2021-08-30 17:04:06,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334936876] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:06,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:06,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 18 [2021-08-30 17:04:06,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146051672] [2021-08-30 17:04:06,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-30 17:04:06,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:06,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-30 17:04:06,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-30 17:04:06,571 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:04:07,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:07,328 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-08-30 17:04:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-30 17:04:07,329 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-08-30 17:04:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:07,330 INFO L225 Difference]: With dead ends: 28 [2021-08-30 17:04:07,330 INFO L226 Difference]: Without dead ends: 28 [2021-08-30 17:04:07,331 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 802.98ms TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2021-08-30 17:04:07,331 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 385.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 439.44ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:07,331 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 63 Invalid, 262 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [9 Valid, 211 Invalid, 0 Unknown, 42 Unchecked, 439.44ms Time] [2021-08-30 17:04:07,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-30 17:04:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-08-30 17:04:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.0) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 17:04:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2021-08-30 17:04:07,334 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 27 [2021-08-30 17:04:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:07,335 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2021-08-30 17:04:07,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:04:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2021-08-30 17:04:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 17:04:07,336 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:07,336 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:07,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:07,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:07,540 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-30 17:04:07,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:07,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1914061661, now seen corresponding path program 1 times [2021-08-30 17:04:07,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:07,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699966639] [2021-08-30 17:04:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:07,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:07,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:07,542 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:07,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-30 17:04:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:04:07,655 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 17:04:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:04:07,731 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-30 17:04:07,731 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 17:04:07,732 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (18 of 19 remaining) [2021-08-30 17:04:07,733 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr0REQUIRES_VIOLATION (17 of 19 remaining) [2021-08-30 17:04:07,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr1REQUIRES_VIOLATION (16 of 19 remaining) [2021-08-30 17:04:07,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr2REQUIRES_VIOLATION (15 of 19 remaining) [2021-08-30 17:04:07,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr3REQUIRES_VIOLATION (14 of 19 remaining) [2021-08-30 17:04:07,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr0REQUIRES_VIOLATION (13 of 19 remaining) [2021-08-30 17:04:07,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr1REQUIRES_VIOLATION (12 of 19 remaining) [2021-08-30 17:04:07,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr2REQUIRES_VIOLATION (11 of 19 remaining) [2021-08-30 17:04:07,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr3REQUIRES_VIOLATION (10 of 19 remaining) [2021-08-30 17:04:07,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr4ASSERT_VIOLATIONMEMORY_FREE (9 of 19 remaining) [2021-08-30 17:04:07,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr5ASSERT_VIOLATIONMEMORY_FREE (8 of 19 remaining) [2021-08-30 17:04:07,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr6ASSERT_VIOLATIONMEMORY_FREE (7 of 19 remaining) [2021-08-30 17:04:07,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr7ASSERT_VIOLATIONMEMORY_FREE (6 of 19 remaining) [2021-08-30 17:04:07,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE (5 of 19 remaining) [2021-08-30 17:04:07,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE (4 of 19 remaining) [2021-08-30 17:04:07,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr10REQUIRES_VIOLATION (3 of 19 remaining) [2021-08-30 17:04:07,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr11REQUIRES_VIOLATION (2 of 19 remaining) [2021-08-30 17:04:07,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr12REQUIRES_VIOLATION (1 of 19 remaining) [2021-08-30 17:04:07,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr13REQUIRES_VIOLATION (0 of 19 remaining) [2021-08-30 17:04:07,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-08-30 17:04:07,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:07,942 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:04:07,952 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 17:04:07,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:04:07 BoogieIcfgContainer [2021-08-30 17:04:07,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:04:07,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:04:07,970 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:04:07,970 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:04:07,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:03:50" (3/4) ... [2021-08-30 17:04:07,973 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:04:07,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:04:07,974 INFO L158 Benchmark]: Toolchain (without parser) took 18213.15ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 39.6MB in the beginning and 54.4MB in the end (delta: -14.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 17:04:07,974 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 42.3MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:04:07,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.99ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 36.7MB in the end (delta: 2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 17:04:07,974 INFO L158 Benchmark]: Boogie Preprocessor took 82.08ms. Allocated memory is still 60.8MB. Free memory was 36.5MB in the beginning and 33.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 17:04:07,975 INFO L158 Benchmark]: RCFGBuilder took 453.30ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.7MB in the beginning and 41.7MB in the end (delta: -8.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 17:04:07,975 INFO L158 Benchmark]: TraceAbstraction took 17273.00ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 41.1MB in the beginning and 55.2MB in the end (delta: -14.1MB). Peak memory consumption was 1.0MB. Max. memory is 16.1GB. [2021-08-30 17:04:07,975 INFO L158 Benchmark]: Witness Printer took 3.81ms. Allocated memory is still 88.1MB. Free memory was 55.2MB in the beginning and 54.4MB in the end (delta: 803.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:04:07,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 42.3MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 394.99ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 36.7MB in the end (delta: 2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.08ms. Allocated memory is still 60.8MB. Free memory was 36.5MB in the beginning and 33.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 453.30ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.7MB in the beginning and 41.7MB in the end (delta: -8.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 17273.00ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 41.1MB in the beginning and 55.2MB in the end (delta: -14.1MB). Peak memory consumption was 1.0MB. Max. memory is 16.1GB. * Witness Printer took 3.81ms. Allocated memory is still 88.1MB. Free memory was 55.2MB in the beginning and 54.4MB in the end (delta: 803.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; VAL [data={31:0}] [L545] CALL alloc_data(&data) VAL [pdata={31:0}] [L529] pdata->lo = malloc(16) VAL [malloc(16)={1:0}, pdata={31:0}, pdata={31:0}] [L530] pdata->hi = malloc(24) VAL [malloc(24)={3:0}, pdata={31:0}, pdata={31:0}] [L545] RET alloc_data(&data) VAL [data={31:0}] [L546] CALL free_data(&data) VAL [data={31:0}] [L534] EXPR data->lo VAL [data={31:0}, data={31:0}, data->lo={1:0}] [L534] void *lo = data->lo; [L535] EXPR data->hi VAL [data={31:0}, data={31:0}, data->hi={3:0}, lo={1:0}] [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) VAL [data={31:0}, data={31:0}, hi={3:0}, lo={1:0}] [L540] data->lo = (void *) 0 VAL [data={31:0}, data={31:0}, hi={3:0}, lo={1:0}] [L541] data->hi = (void *) 0 VAL [data={31:0}, data={31:0}, hi={3:0}, lo={1:0}] [L546] RET free_data(&data) VAL [data={31:0}] [L547] return 0; [L547] return 0; VAL [\result=0] - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 79 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 17202.82ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 14.73ms, AutomataDifference: 3984.84ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.47ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 229 SdHoareTripleChecker+Valid, 2990.74ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 228 mSDsluCounter, 329 SdHoareTripleChecker+Invalid, 2557.02ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 594 IncrementalHoareTripleChecker+Unchecked, 1121 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1682 IncrementalHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 60 mSDtfsCounter, 1682 mSolverCounterSat, 20.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 389 GetRequests, 243 SyntacticMatches, 15 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 6160.83ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 49.64ms AutomataMinimizationTime, 10 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 102.08ms SsaConstructionTime, 330.90ms SatisfiabilityAnalysisTime, 9519.11ms InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 350 ConstructedInterpolants, 46 QuantifiedInterpolants, 2802 SizeOfPredicates, 94 NumberOfNonLiveVariables, 1134 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:04:08,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...